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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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*/ |
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|
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import junit.framework.*; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.AbstractExecutorService; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.ForkJoinPool; |
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import java.util.concurrent.ForkJoinTask; |
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import java.util.concurrent.ForkJoinWorkerThread; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.locks.ReentrantLock; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.security.AccessControlException; |
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import java.security.Policy; |
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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|
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public class ForkJoinPoolTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ForkJoinPoolTest.class); |
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} |
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|
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/** |
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* Testing coverage notes: |
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* |
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* 1. shutdown and related methods are tested via super.joinPool. |
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* |
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* 2. newTaskFor and adapters are tested in submit/invoke tests |
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* |
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* 3. We cannot portably test monitoring methods such as |
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* getStealCount() since they rely ultimately on random task |
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* stealing that may cause tasks not to be stolen/propagated |
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* across threads, especially on uniprocessors. |
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* |
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* 4. There are no independently testable ForkJoinWorkerThread |
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* methods, but they are covered here and in task tests. |
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*/ |
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|
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// Some classes to test extension and factory methods |
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|
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static class MyHandler implements Thread.UncaughtExceptionHandler { |
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volatile int catches = 0; |
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public void uncaughtException(Thread t, Throwable e) { |
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++catches; |
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} |
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} |
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|
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// to test handlers |
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static class FailingFJWSubclass extends ForkJoinWorkerThread { |
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public FailingFJWSubclass(ForkJoinPool p) { super(p) ; } |
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protected void onStart() { super.onStart(); throw new Error(); } |
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} |
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|
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static class FailingThreadFactory |
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implements ForkJoinPool.ForkJoinWorkerThreadFactory { |
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volatile int calls = 0; |
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public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
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if (++calls > 1) return null; |
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return new FailingFJWSubclass(p); |
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} |
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} |
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|
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static class SubFJP extends ForkJoinPool { // to expose protected |
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SubFJP() { super(1); } |
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public int drainTasksTo(Collection<? super ForkJoinTask<?>> c) { |
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return super.drainTasksTo(c); |
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} |
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public ForkJoinTask<?> pollSubmission() { |
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return super.pollSubmission(); |
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} |
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} |
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|
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static class ManagedLocker implements ForkJoinPool.ManagedBlocker { |
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final ReentrantLock lock; |
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boolean hasLock = false; |
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ManagedLocker(ReentrantLock lock) { this.lock = lock; } |
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public boolean block() { |
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if (!hasLock) |
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lock.lock(); |
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return true; |
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} |
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public boolean isReleasable() { |
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return hasLock || (hasLock = lock.tryLock()); |
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} |
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} |
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|
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// A simple recursive task for testing |
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static final class FibTask extends RecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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public Integer compute() { |
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int n = number; |
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if (n <= 1) |
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return n; |
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FibTask f1 = new FibTask(n - 1); |
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f1.fork(); |
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return (new FibTask(n - 2)).compute() + f1.join(); |
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} |
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} |
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|
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// A failing task for testing |
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static final class FailingTask extends ForkJoinTask<Void> { |
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public final Void getRawResult() { return null; } |
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protected final void setRawResult(Void mustBeNull) { } |
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protected final boolean exec() { throw new Error(); } |
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FailingTask() {} |
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} |
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|
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// Fib needlessly using locking to test ManagedBlockers |
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static final class LockingFibTask extends RecursiveTask<Integer> { |
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final int number; |
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final ManagedLocker locker; |
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final ReentrantLock lock; |
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LockingFibTask(int n, ManagedLocker locker, ReentrantLock lock) { |
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number = n; |
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this.locker = locker; |
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this.lock = lock; |
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} |
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public Integer compute() { |
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int n; |
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LockingFibTask f1 = null; |
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LockingFibTask f2 = null; |
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locker.block(); |
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n = number; |
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if (n > 1) { |
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f1 = new LockingFibTask(n - 1, locker, lock); |
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f2 = new LockingFibTask(n - 2, locker, lock); |
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} |
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lock.unlock(); |
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if (n <= 1) |
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return n; |
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else { |
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f1.fork(); |
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return f2.compute() + f1.join(); |
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} |
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} |
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} |
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|
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/** |
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* Successfully constructed pool reports default factory, |
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* parallelism and async mode policies, no active threads or |
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* tasks, and quiescent running state. |
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*/ |
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public void testDefaultInitialState() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* getParallelism returns size set in constructor |
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*/ |
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public void testGetParallelism() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(1, p.getParallelism()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* getPoolSize returns number of started workers. |
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*/ |
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public void testGetPoolSize() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(0, p.getActiveThreadCount()); |
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Future<String> future = p.submit(new StringTask()); |
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assertEquals(1, p.getPoolSize()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
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public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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final CountDownLatch uehInvoked = new CountDownLatch(1); |
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final Thread.UncaughtExceptionHandler eh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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uehInvoked.countDown(); |
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}}; |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* After invoking a single task, isQuiescent is true, |
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* queues are empty, threads are not active, and |
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* construction parameters continue to hold |
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*/ |
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public void testisQuiescent() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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assertTrue(p.isQuiescent()); |
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p.invoke(new FibTask(20)); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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Thread.sleep(SMALL_DELAY_MS); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
276 |
} finally { |
277 |
joinPool(p); |
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} |
279 |
} |
280 |
|
281 |
/** |
282 |
* Completed submit(ForkJoinTask) returns result |
283 |
*/ |
284 |
public void testSubmitForkJoinTask() throws Throwable { |
285 |
ForkJoinPool p = new ForkJoinPool(1); |
286 |
try { |
287 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
288 |
assertEquals(21, (int) f.get()); |
289 |
} finally { |
290 |
joinPool(p); |
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} |
292 |
} |
293 |
|
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/** |
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* A task submitted after shutdown is rejected |
296 |
*/ |
297 |
public void testSubmitAfterShutdown() { |
298 |
ForkJoinPool p = new ForkJoinPool(1); |
299 |
try { |
300 |
p.shutdown(); |
301 |
assertTrue(p.isShutdown()); |
302 |
try { |
303 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
304 |
shouldThrow(); |
305 |
} catch (RejectedExecutionException success) {} |
306 |
} finally { |
307 |
joinPool(p); |
308 |
} |
309 |
} |
310 |
|
311 |
/** |
312 |
* Pool maintains parallelism when using ManagedBlocker |
313 |
*/ |
314 |
public void testBlockingForkJoinTask() throws Throwable { |
315 |
ForkJoinPool p = new ForkJoinPool(4); |
316 |
try { |
317 |
ReentrantLock lock = new ReentrantLock(); |
318 |
ManagedLocker locker = new ManagedLocker(lock); |
319 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
320 |
p.execute(f); |
321 |
assertEquals(832040, (int) f.get()); |
322 |
} finally { |
323 |
p.shutdownNow(); // don't wait out shutdown |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* pollSubmission returns unexecuted submitted task, if present |
329 |
*/ |
330 |
public void testPollSubmission() { |
331 |
SubFJP p = new SubFJP(); |
332 |
try { |
333 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
334 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
335 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
336 |
ForkJoinTask r = p.pollSubmission(); |
337 |
assertTrue(r == a || r == b || r == c); |
338 |
assertFalse(r.isDone()); |
339 |
} finally { |
340 |
joinPool(p); |
341 |
} |
342 |
} |
343 |
|
344 |
/** |
345 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
346 |
*/ |
347 |
public void testDrainTasksTo() { |
348 |
SubFJP p = new SubFJP(); |
349 |
try { |
350 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
351 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
352 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
353 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
354 |
p.drainTasksTo(al); |
355 |
assertTrue(al.size() > 0); |
356 |
for (ForkJoinTask r : al) { |
357 |
assertTrue(r == a || r == b || r == c); |
358 |
assertFalse(r.isDone()); |
359 |
} |
360 |
} finally { |
361 |
joinPool(p); |
362 |
} |
363 |
} |
364 |
|
365 |
|
366 |
// FJ Versions of AbstractExecutorService tests |
367 |
|
368 |
/** |
369 |
* execute(runnable) runs it to completion |
370 |
*/ |
371 |
public void testExecuteRunnable() throws Throwable { |
372 |
ExecutorService e = new ForkJoinPool(1); |
373 |
try { |
374 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
375 |
assertFalse(task.done); |
376 |
Future<?> future = e.submit(task); |
377 |
future.get(); |
378 |
assertTrue(task.done); |
379 |
} finally { |
380 |
joinPool(e); |
381 |
} |
382 |
} |
383 |
|
384 |
|
385 |
/** |
386 |
* Completed submit(callable) returns result |
387 |
*/ |
388 |
public void testSubmitCallable() throws Throwable { |
389 |
ExecutorService e = new ForkJoinPool(1); |
390 |
try { |
391 |
Future<String> future = e.submit(new StringTask()); |
392 |
String result = future.get(); |
393 |
assertSame(TEST_STRING, result); |
394 |
} finally { |
395 |
joinPool(e); |
396 |
} |
397 |
} |
398 |
|
399 |
/** |
400 |
* Completed submit(runnable) returns successfully |
401 |
*/ |
402 |
public void testSubmitRunnable() throws Throwable { |
403 |
ExecutorService e = new ForkJoinPool(1); |
404 |
try { |
405 |
Future<?> future = e.submit(new NoOpRunnable()); |
406 |
future.get(); |
407 |
assertTrue(future.isDone()); |
408 |
} finally { |
409 |
joinPool(e); |
410 |
} |
411 |
} |
412 |
|
413 |
/** |
414 |
* Completed submit(runnable, result) returns result |
415 |
*/ |
416 |
public void testSubmitRunnable2() throws Throwable { |
417 |
ExecutorService e = new ForkJoinPool(1); |
418 |
try { |
419 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
420 |
String result = future.get(); |
421 |
assertSame(TEST_STRING, result); |
422 |
} finally { |
423 |
joinPool(e); |
424 |
} |
425 |
} |
426 |
|
427 |
|
428 |
/** |
429 |
* A submitted privileged action to completion |
430 |
*/ |
431 |
public void testSubmitPrivilegedAction() throws Throwable { |
432 |
Policy savedPolicy = null; |
433 |
try { |
434 |
savedPolicy = Policy.getPolicy(); |
435 |
AdjustablePolicy policy = new AdjustablePolicy(); |
436 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
437 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
438 |
Policy.setPolicy(policy); |
439 |
} catch (AccessControlException ok) { |
440 |
return; |
441 |
} |
442 |
|
443 |
try { |
444 |
ExecutorService e = new ForkJoinPool(1); |
445 |
try { |
446 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
447 |
public Object run() { |
448 |
return TEST_STRING; |
449 |
}})); |
450 |
|
451 |
Object result = future.get(); |
452 |
assertSame(TEST_STRING, result); |
453 |
} finally { |
454 |
joinPool(e); |
455 |
} |
456 |
} finally { |
457 |
Policy.setPolicy(savedPolicy); |
458 |
} |
459 |
} |
460 |
|
461 |
/** |
462 |
* A submitted a privileged exception action runs to completion |
463 |
*/ |
464 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
465 |
Policy savedPolicy = null; |
466 |
try { |
467 |
savedPolicy = Policy.getPolicy(); |
468 |
AdjustablePolicy policy = new AdjustablePolicy(); |
469 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
470 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
471 |
Policy.setPolicy(policy); |
472 |
} catch (AccessControlException ok) { |
473 |
return; |
474 |
} |
475 |
|
476 |
try { |
477 |
ExecutorService e = new ForkJoinPool(1); |
478 |
try { |
479 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
480 |
public Object run() { |
481 |
return TEST_STRING; |
482 |
}})); |
483 |
|
484 |
Object result = future.get(); |
485 |
assertSame(TEST_STRING, result); |
486 |
} finally { |
487 |
joinPool(e); |
488 |
} |
489 |
} finally { |
490 |
Policy.setPolicy(savedPolicy); |
491 |
} |
492 |
} |
493 |
|
494 |
/** |
495 |
* A submitted failed privileged exception action reports exception |
496 |
*/ |
497 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
498 |
Policy savedPolicy = null; |
499 |
try { |
500 |
savedPolicy = Policy.getPolicy(); |
501 |
AdjustablePolicy policy = new AdjustablePolicy(); |
502 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
503 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
504 |
Policy.setPolicy(policy); |
505 |
} catch (AccessControlException ok) { |
506 |
return; |
507 |
} |
508 |
|
509 |
try { |
510 |
ExecutorService e = new ForkJoinPool(1); |
511 |
try { |
512 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
513 |
public Object run() throws Exception { |
514 |
throw new IndexOutOfBoundsException(); |
515 |
}})); |
516 |
|
517 |
Object result = future.get(); |
518 |
shouldThrow(); |
519 |
} catch (ExecutionException success) { |
520 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
521 |
} finally { |
522 |
joinPool(e); |
523 |
} |
524 |
} finally { |
525 |
Policy.setPolicy(savedPolicy); |
526 |
} |
527 |
} |
528 |
|
529 |
/** |
530 |
* execute(null runnable) throws NullPointerException |
531 |
*/ |
532 |
public void testExecuteNullRunnable() { |
533 |
ExecutorService e = new ForkJoinPool(1); |
534 |
try { |
535 |
Future<?> future = e.submit((Runnable) null); |
536 |
shouldThrow(); |
537 |
} catch (NullPointerException success) { |
538 |
} finally { |
539 |
joinPool(e); |
540 |
} |
541 |
} |
542 |
|
543 |
|
544 |
/** |
545 |
* submit(null callable) throws NullPointerException |
546 |
*/ |
547 |
public void testSubmitNullCallable() { |
548 |
ExecutorService e = new ForkJoinPool(1); |
549 |
try { |
550 |
Future<String> future = e.submit((Callable) null); |
551 |
shouldThrow(); |
552 |
} catch (NullPointerException success) { |
553 |
} finally { |
554 |
joinPool(e); |
555 |
} |
556 |
} |
557 |
|
558 |
|
559 |
/** |
560 |
* submit(callable).get() throws InterruptedException if interrupted |
561 |
*/ |
562 |
public void testInterruptedSubmit() throws InterruptedException { |
563 |
final CountDownLatch submitted = new CountDownLatch(1); |
564 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
565 |
final ExecutorService p = new ForkJoinPool(1); |
566 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
567 |
public Void realCall() throws InterruptedException { |
568 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
569 |
return null; |
570 |
}}; |
571 |
try { |
572 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
573 |
public void realRun() throws Exception { |
574 |
Future<Void> future = p.submit(awaiter); |
575 |
submitted.countDown(); |
576 |
future.get(); |
577 |
}}); |
578 |
t.start(); |
579 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
580 |
t.interrupt(); |
581 |
t.join(); |
582 |
} finally { |
583 |
quittingTime.countDown(); |
584 |
joinPool(p); |
585 |
} |
586 |
} |
587 |
|
588 |
/** |
589 |
* get of submit(callable) throws ExecutionException if callable |
590 |
* throws exception |
591 |
*/ |
592 |
public void testSubmitEE() throws Throwable { |
593 |
ForkJoinPool p = new ForkJoinPool(1); |
594 |
try { |
595 |
p.submit(new Callable() { |
596 |
public Object call() { |
597 |
int i = 5/0; |
598 |
return Boolean.TRUE; |
599 |
}}).get(); |
600 |
shouldThrow(); |
601 |
} catch (ExecutionException success) { |
602 |
assertTrue(success.getCause() instanceof ArithmeticException); |
603 |
} finally { |
604 |
joinPool(p); |
605 |
} |
606 |
} |
607 |
|
608 |
/** |
609 |
* invokeAny(null) throws NullPointerException |
610 |
*/ |
611 |
public void testInvokeAny1() throws Throwable { |
612 |
ExecutorService e = new ForkJoinPool(1); |
613 |
try { |
614 |
e.invokeAny(null); |
615 |
shouldThrow(); |
616 |
} catch (NullPointerException success) { |
617 |
} finally { |
618 |
joinPool(e); |
619 |
} |
620 |
} |
621 |
|
622 |
/** |
623 |
* invokeAny(empty collection) throws IllegalArgumentException |
624 |
*/ |
625 |
public void testInvokeAny2() throws Throwable { |
626 |
ExecutorService e = new ForkJoinPool(1); |
627 |
try { |
628 |
e.invokeAny(new ArrayList<Callable<String>>()); |
629 |
shouldThrow(); |
630 |
} catch (IllegalArgumentException success) { |
631 |
} finally { |
632 |
joinPool(e); |
633 |
} |
634 |
} |
635 |
|
636 |
/** |
637 |
* invokeAny(c) throws NullPointerException if c has a single null element |
638 |
*/ |
639 |
public void testInvokeAny3() throws Throwable { |
640 |
ExecutorService e = new ForkJoinPool(1); |
641 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
642 |
l.add(null); |
643 |
try { |
644 |
e.invokeAny(l); |
645 |
shouldThrow(); |
646 |
} catch (NullPointerException success) { |
647 |
} finally { |
648 |
joinPool(e); |
649 |
} |
650 |
} |
651 |
|
652 |
/** |
653 |
* invokeAny(c) throws NullPointerException if c has null elements |
654 |
*/ |
655 |
public void testInvokeAny4() throws Throwable { |
656 |
CountDownLatch latch = new CountDownLatch(1); |
657 |
ExecutorService e = new ForkJoinPool(1); |
658 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
659 |
l.add(latchAwaitingStringTask(latch)); |
660 |
l.add(null); |
661 |
try { |
662 |
e.invokeAny(l); |
663 |
shouldThrow(); |
664 |
} catch (NullPointerException success) { |
665 |
} finally { |
666 |
latch.countDown(); |
667 |
joinPool(e); |
668 |
} |
669 |
} |
670 |
|
671 |
/** |
672 |
* invokeAny(c) throws ExecutionException if no task in c completes |
673 |
*/ |
674 |
public void testInvokeAny5() throws Throwable { |
675 |
ExecutorService e = new ForkJoinPool(1); |
676 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
677 |
l.add(new NPETask()); |
678 |
try { |
679 |
e.invokeAny(l); |
680 |
shouldThrow(); |
681 |
} catch (ExecutionException success) { |
682 |
assertTrue(success.getCause() instanceof NullPointerException); |
683 |
} finally { |
684 |
joinPool(e); |
685 |
} |
686 |
} |
687 |
|
688 |
/** |
689 |
* invokeAny(c) returns result of some task in c if at least one completes |
690 |
*/ |
691 |
public void testInvokeAny6() throws Throwable { |
692 |
ExecutorService e = new ForkJoinPool(1); |
693 |
try { |
694 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
695 |
l.add(new StringTask()); |
696 |
l.add(new StringTask()); |
697 |
String result = e.invokeAny(l); |
698 |
assertSame(TEST_STRING, result); |
699 |
} finally { |
700 |
joinPool(e); |
701 |
} |
702 |
} |
703 |
|
704 |
/** |
705 |
* invokeAll(null) throws NullPointerException |
706 |
*/ |
707 |
public void testInvokeAll1() throws Throwable { |
708 |
ExecutorService e = new ForkJoinPool(1); |
709 |
try { |
710 |
e.invokeAll(null); |
711 |
shouldThrow(); |
712 |
} catch (NullPointerException success) { |
713 |
} finally { |
714 |
joinPool(e); |
715 |
} |
716 |
} |
717 |
|
718 |
/** |
719 |
* invokeAll(empty collection) returns empty collection |
720 |
*/ |
721 |
public void testInvokeAll2() throws InterruptedException { |
722 |
ExecutorService e = new ForkJoinPool(1); |
723 |
try { |
724 |
List<Future<String>> r |
725 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
726 |
assertTrue(r.isEmpty()); |
727 |
} finally { |
728 |
joinPool(e); |
729 |
} |
730 |
} |
731 |
|
732 |
/** |
733 |
* invokeAll(c) throws NullPointerException if c has null elements |
734 |
*/ |
735 |
public void testInvokeAll3() throws InterruptedException { |
736 |
ExecutorService e = new ForkJoinPool(1); |
737 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
738 |
l.add(new StringTask()); |
739 |
l.add(null); |
740 |
try { |
741 |
e.invokeAll(l); |
742 |
shouldThrow(); |
743 |
} catch (NullPointerException success) { |
744 |
} finally { |
745 |
joinPool(e); |
746 |
} |
747 |
} |
748 |
|
749 |
/** |
750 |
* get of returned element of invokeAll(c) throws |
751 |
* ExecutionException on failed task |
752 |
*/ |
753 |
public void testInvokeAll4() throws Throwable { |
754 |
ExecutorService e = new ForkJoinPool(1); |
755 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
756 |
l.add(new NPETask()); |
757 |
List<Future<String>> futures = e.invokeAll(l); |
758 |
assertEquals(1, futures.size()); |
759 |
try { |
760 |
futures.get(0).get(); |
761 |
shouldThrow(); |
762 |
} catch (ExecutionException success) { |
763 |
assertTrue(success.getCause() instanceof NullPointerException); |
764 |
} finally { |
765 |
joinPool(e); |
766 |
} |
767 |
} |
768 |
|
769 |
/** |
770 |
* invokeAll(c) returns results of all completed tasks in c |
771 |
*/ |
772 |
public void testInvokeAll5() throws Throwable { |
773 |
ExecutorService e = new ForkJoinPool(1); |
774 |
try { |
775 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
776 |
l.add(new StringTask()); |
777 |
l.add(new StringTask()); |
778 |
List<Future<String>> futures = e.invokeAll(l); |
779 |
assertEquals(2, futures.size()); |
780 |
for (Future<String> future : futures) |
781 |
assertSame(TEST_STRING, future.get()); |
782 |
} finally { |
783 |
joinPool(e); |
784 |
} |
785 |
} |
786 |
|
787 |
|
788 |
/** |
789 |
* timed invokeAny(null) throws NullPointerException |
790 |
*/ |
791 |
public void testTimedInvokeAny1() throws Throwable { |
792 |
ExecutorService e = new ForkJoinPool(1); |
793 |
try { |
794 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
795 |
shouldThrow(); |
796 |
} catch (NullPointerException success) { |
797 |
} finally { |
798 |
joinPool(e); |
799 |
} |
800 |
} |
801 |
|
802 |
/** |
803 |
* timed invokeAny(null time unit) throws NullPointerException |
804 |
*/ |
805 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
806 |
ExecutorService e = new ForkJoinPool(1); |
807 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
808 |
l.add(new StringTask()); |
809 |
try { |
810 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
811 |
shouldThrow(); |
812 |
} catch (NullPointerException success) { |
813 |
} finally { |
814 |
joinPool(e); |
815 |
} |
816 |
} |
817 |
|
818 |
/** |
819 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
820 |
*/ |
821 |
public void testTimedInvokeAny2() throws Throwable { |
822 |
ExecutorService e = new ForkJoinPool(1); |
823 |
try { |
824 |
e.invokeAny(new ArrayList<Callable<String>>(), |
825 |
MEDIUM_DELAY_MS, MILLISECONDS); |
826 |
shouldThrow(); |
827 |
} catch (IllegalArgumentException success) { |
828 |
} finally { |
829 |
joinPool(e); |
830 |
} |
831 |
} |
832 |
|
833 |
/** |
834 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
835 |
*/ |
836 |
public void testTimedInvokeAny3() throws Throwable { |
837 |
CountDownLatch latch = new CountDownLatch(1); |
838 |
ExecutorService e = new ForkJoinPool(1); |
839 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
840 |
l.add(latchAwaitingStringTask(latch)); |
841 |
l.add(null); |
842 |
try { |
843 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
844 |
shouldThrow(); |
845 |
} catch (NullPointerException success) { |
846 |
} finally { |
847 |
latch.countDown(); |
848 |
joinPool(e); |
849 |
} |
850 |
} |
851 |
|
852 |
/** |
853 |
* timed invokeAny(c) throws ExecutionException if no task completes |
854 |
*/ |
855 |
public void testTimedInvokeAny4() throws Throwable { |
856 |
ExecutorService e = new ForkJoinPool(1); |
857 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
858 |
l.add(new NPETask()); |
859 |
try { |
860 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
861 |
shouldThrow(); |
862 |
} catch (ExecutionException success) { |
863 |
assertTrue(success.getCause() instanceof NullPointerException); |
864 |
} finally { |
865 |
joinPool(e); |
866 |
} |
867 |
} |
868 |
|
869 |
/** |
870 |
* timed invokeAny(c) returns result of some task in c |
871 |
*/ |
872 |
public void testTimedInvokeAny5() throws Throwable { |
873 |
ExecutorService e = new ForkJoinPool(1); |
874 |
try { |
875 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
876 |
l.add(new StringTask()); |
877 |
l.add(new StringTask()); |
878 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
879 |
assertSame(TEST_STRING, result); |
880 |
} finally { |
881 |
joinPool(e); |
882 |
} |
883 |
} |
884 |
|
885 |
/** |
886 |
* timed invokeAll(null) throws NullPointerException |
887 |
*/ |
888 |
public void testTimedInvokeAll1() throws Throwable { |
889 |
ExecutorService e = new ForkJoinPool(1); |
890 |
try { |
891 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
892 |
shouldThrow(); |
893 |
} catch (NullPointerException success) { |
894 |
} finally { |
895 |
joinPool(e); |
896 |
} |
897 |
} |
898 |
|
899 |
/** |
900 |
* timed invokeAll(null time unit) throws NullPointerException |
901 |
*/ |
902 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
903 |
ExecutorService e = new ForkJoinPool(1); |
904 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
905 |
l.add(new StringTask()); |
906 |
try { |
907 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
908 |
shouldThrow(); |
909 |
} catch (NullPointerException success) { |
910 |
} finally { |
911 |
joinPool(e); |
912 |
} |
913 |
} |
914 |
|
915 |
/** |
916 |
* timed invokeAll(empty collection) returns empty collection |
917 |
*/ |
918 |
public void testTimedInvokeAll2() throws InterruptedException { |
919 |
ExecutorService e = new ForkJoinPool(1); |
920 |
try { |
921 |
List<Future<String>> r |
922 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
923 |
MEDIUM_DELAY_MS, MILLISECONDS); |
924 |
assertTrue(r.isEmpty()); |
925 |
} finally { |
926 |
joinPool(e); |
927 |
} |
928 |
} |
929 |
|
930 |
/** |
931 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
932 |
*/ |
933 |
public void testTimedInvokeAll3() throws InterruptedException { |
934 |
ExecutorService e = new ForkJoinPool(1); |
935 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
936 |
l.add(new StringTask()); |
937 |
l.add(null); |
938 |
try { |
939 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
940 |
shouldThrow(); |
941 |
} catch (NullPointerException success) { |
942 |
} finally { |
943 |
joinPool(e); |
944 |
} |
945 |
} |
946 |
|
947 |
/** |
948 |
* get of returned element of invokeAll(c) throws exception on failed task |
949 |
*/ |
950 |
public void testTimedInvokeAll4() throws Throwable { |
951 |
ExecutorService e = new ForkJoinPool(1); |
952 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
953 |
l.add(new NPETask()); |
954 |
List<Future<String>> futures |
955 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
956 |
assertEquals(1, futures.size()); |
957 |
try { |
958 |
futures.get(0).get(); |
959 |
shouldThrow(); |
960 |
} catch (ExecutionException success) { |
961 |
assertTrue(success.getCause() instanceof NullPointerException); |
962 |
} finally { |
963 |
joinPool(e); |
964 |
} |
965 |
} |
966 |
|
967 |
/** |
968 |
* timed invokeAll(c) returns results of all completed tasks in c |
969 |
*/ |
970 |
public void testTimedInvokeAll5() throws Throwable { |
971 |
ExecutorService e = new ForkJoinPool(1); |
972 |
try { |
973 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
974 |
l.add(new StringTask()); |
975 |
l.add(new StringTask()); |
976 |
List<Future<String>> futures |
977 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
978 |
assertEquals(2, futures.size()); |
979 |
for (Future<String> future : futures) |
980 |
assertSame(TEST_STRING, future.get()); |
981 |
} finally { |
982 |
joinPool(e); |
983 |
} |
984 |
} |
985 |
|
986 |
} |